Went to my local hunting place and decided to hunt next to this old chainlink fence. Could'nt get close to it cause the E-trac would just go nuts. I gave up on the fence idea and went elsewhere. I later looked over that way and a guy is hunting that same fence with what looks like a Wal-mart Bounty Hunter? I walked over and ask if he was doing any good next to the fence. He said just some clad coins so far, just then he got a "beep" (no headphones) and when he dug that beep it was a mercury dime! It was right next to the fence. Can the E-trac get close to a fence like that?? Could it be that tiny coil on his detector? He was'nt but about 7 feet from where I gave up.